Table II
Comparison of Relevant Physical Properties of Pure Platinum, Platinum-5 wt.% Copper and Platinum- 5 wt.% Ruthenium (1)
| Property | Platinum | Pt-5%Cu | Pt-5%Ru |
|---|---|---|---|
| Density, g cm-3 | 21.4 | 20.0 | 20.7 |
| Hardness, Hv (annealed) | 50 | 125 | 130 |
| Melting range, ºC | 1769 | 1725–1745 | 1780–1795 |